Dryinus pristinus Olmi

Olmi, Massimo, Guglielmino, Adalgisa & Vollaro, Massimo, 2011, Revision of fossil species of Dryinus belonging to constans group, with description of a new species (Hymenoptera: Dryinidae), Zootaxa 2981, pp. 43-55 : 51-54

Dryinus pristinus Olmi

( Figs 5 B, 6)

Dryinus pristinus Olmi 1998: 79 .

Dryinus pristinus Olmi: Olmi & Bechly 2001 : 50.

Type material. HOLOTYPE, Ƥ, Lower/Middle Miocene amber from Dominican Republic (ca.16 mybp) ( AMNH; No. DR-14-1139).

Diagnosis. Female of Dryinus with pronotal tubercle not reaching tegula, notauli complete, fore wing crossed by two dark transverse bands. Male unknown.

Redescription. Female: macropterous; length 5.7 mm. Colour not distinct, apparently black, except mandible, clypeus and antenna testaceous; metasoma brown-testaceous; legs brown. Antenna 10-segmented, long and slen- der, apparently glabrous, weakly thickened distally; antennal rhinaria present apparently on segments 6–10; antennal segments in following proportions: 10:5:28:13:10:8:6:5:4 (10th segment not distinct); antenna more than four times as long as head (length of head dorsally measured from occipital carina behind ocelli to distal apex of mandible): 89 (without last antennal segment):22. Head flat, dull, with sculpture not distinct; clypeus with anterior margin rounded, not bidentate; mandible hardly distinct (number of teeth not distinct); occipital carina only present behind vertex (rest of occipital carina not distinct); occiput excavated; eye normally bulging; POL = 2; OL = 4; OOL = 6; OPL = 1.5; TL = 1; greatest breadth of posterior ocellus longer than POL (3:2); frontal line complete. Maxillary palpi 6-segmented. Labial palpi 3-segmented. Pronotum crossed by anterior strong transverse impression between anterior collar and disc; disc humped; posterior collar long; pronotum apparently dull, with sculpture not distinct, slightly longer than head (25:22); pronotal tubercle not reaching tegula. Scutum apparently dull, with sculpture not distinct, shorter than pronotum (14:25). Notauli hardly distinct, apparently complete and posteriorly separated; minimum distance between notauli apparently longer than greatest breadth of posterior ocelli (4:3). Scutellum shorter than scutum (8:14), with sculpture not distinct. Metanotum shorter than scutellum (5:8), with sculpture not distinct. Propodeum longer than scutum (32:14), apparently reticulate rugose; propodeal areolae not distinct; posterior surface of propodeum not distinct, shorter than dorsal surface (10:22). Shape of pronotum, scutum, scutellum, metanotum and propodeum usual for Dryininae . Fore wing apparently with 2 dark transverse bands, with usual venation of Dryininae ; pterostigma narrow, much longer than broad (measure difficult); marginal cell open; distal part of stigmal vein much longer than proximal part (15:8); stigmal vein weakly S -shaped, forming angle between proximal and distal parts; fore wing with usual three basal cells clearly enclosed by pigmented veins (costal, median and submedian cells). Hind wing hyaline, without dark transverse bands. Shape, breadth and length of wings usual for Dryininae . Fore leg segments in following proportions: 32 (coxa): 30 (trochanter): 48 (femur): 40 (tibia): 17 (tarsal segment 1): 2 (tarsal segment 2): 6 (tarsal segment 3): 12 (tarsal segment 4): 26 (tarsal segment 5); enlarged claw slightly shorter than segment 5 of protarsus (25:26); protrochanter slender and long, with long proximal stalk, broadened after half-way; fore trochanter more than four times as long as broad (20:4) (greatest breadth measured on distal club); segment 3 of protarsus produced into hook; rudimentary claw probably present, not distinct; arolium much shorter than enlarged claw (3:25); enlarged claw with one large subapical tooth and one row of numerous lamellae (at least 13); distal apex of enlarged claw apparently not spatulate. Segment 5 of protarsus with numerous lamellae (number of rows of lamellae not distinct); distal apex with group of lamellae (number of lamellae not distinct). Midleg segments in following proportions: 12 (coxa): 6 (trochanter): 30 (femur): 30 (tibia): 20 (tarsal segment 1): 8 (tarsal segment 2): 8 (tarsal segment 3): 4 (tarsal segment 4): 7 (tarsal segment 5). Hindleg segments in following proportions: 17 (coxa): 7 (trochanter): 41 (femur): 54 (tibia): 24 (tarsal segment 1): 13 (tarsal segment 2): 10 (tarsal segment 3): 5 (tarsal segment 4): 8 (tarsal segment 5). Petiole short, usual for Dryininae . Shape of body usual for Dryininae . Tibial spurs 1/1/2.

Male: unknown.

Hosts. Unknown.

Figures

FIGURE 5. A. Dryinus priscus, holotype Ƥ. Length 4.0 mm. B. D. pristinus, holotype Ƥ. Length 5.7 mm.